[ABR-166491] After Agent for Linux is installed in CentOS with UEFI, there are errors added to 'dmesg' every 20 minutes. Error: "session_unlockdev(mms,14160): No lock for device (800001) in session (ffff880416860000)".

[ABR-165887] Installation of Agent for Linux in CentOS 7 fails if there is a ZFS-formatted partition present in the system.

[ABR-165562] Bootable media with Japanese localization crashes when starting backup to a password-protected Acronis Secure Zone.

[ABR-163472] Backup plans do not start on schedule after the system time is switched to daylight saving time (DST).

[ABR-166491] After Agent for Linux is installed in CentOS with UEF, there are errors added to 'dmesg' every 20 minutes. Error: "session_unlockdev(mms,14160): No lock for device (800001) in session (ffff880416860000)".

[ABR-165562] Bootable media with Japanese localization crashes when starting backup to a password-protected Acronis Secure Zone.

[ABR-151072] Backups saved to Acronis Storage Node may become corrupted or non-encrypted during consolidation if the first full backup was deleted from the chain (manually or automatically) and the archive was encrypted with the AES256 algorithm.

[ABR-150635] Recovery from encrypted backup fails with "The file is corrupted" error if the MD5 hash value of the password used for encryption ends with "00"

[ABR-147400] Backups of files/folders to tapes become slower with each incremental backup.

[ABR-137446] Reports contain time stamps of backup activities in the UTC time zone instead of using time zone settings from the management server.

[ABR-130864] Linux OS with LVM setup does not boot after recovery as VM via "acrocmd" if the backup was taken via Agent for Linux (P2V scenario).

[ABR-125288] Windows system restored to Dell PowerEdge R430 with PERC 130 RAID controller is unbootable even if correct drivers were provided during recovery.

[ABR-120011] Acronis Universal Restore fails to install specific drivers if the .inf files contain references to .sys files in non-matching upper/lower case, for example: the .inf file contains reference to "percsas3.sys", while the real file name is "PercSaS3.sys"

[ABR-118646] Backups replication from personal vault on local disk to a standalone tape drive fails with "Internal error: Backup archive information cannot be found in the database."

[ABR-117095] Incorrect vSphere guest OS property may be set for VMs created after recovery from physical machine backup (P2V scenario) if the original OS in the backup was CentOS 7 or Windows Server 2016/Windows 10.

[ABR-116983] Backup to SMB share performed by Agent for VMware (Virtual Appliance) may fail with "URI is empty" error in some cases.

[ABR-105287] Replication of files/folders backup archives between two Acronis Storage Node vaults based on network shares is slower than expected.

[ABR-136113] Recovering from a backup of a virtual machine with SAS disks creates a virtual machine with IDE disks.

[ABR-127009] Creating a managed vault without encryption and deduplication fails. The following errors appear: "Failed to add vault", "The vaults are not initialized yet. Please try again later after the storage node is completely initialized."

[ABR-124721] If the disk runs out of space when the metadata of archives stored in a managed vault is being updated after a backup, the entire archive is deleted.

[ABR-88455] In case of unstable network connection between Agent for VMware and the vCenter it manages, changes made in the vCenter (renaming a virtual machine, moving a machine to another host, etc.) are not reflected on the management server. As a result, operations with the affected virtual machines, like virtual machine binding, work incorrectly.

[ABR-65978, ABR-69047, ABR-119118] Under WinPE-based bootable media, Acronis Managed Machine Service crashes if a recovery is performed after a backup during the same session.

Issues fixed in build 50073

[ABR-136635] Under Windows XP Professional SP3 (32-bit) and Windows Server 2003 R2, the web installer with a certificate check fails right after start.

[ABR-136528] Rescanning archives fails if the archives are spanned across several tapes.

[ABR-134387] Recovery from the cloud storage fails after the uploading of the initial seeding backup was interrupted, continued, and then successfully completed. The following error appears: "Archive is corrupted."

[ABR-133723] Security improvements for installers: the web installer should download files via https, the installer should check certificates of files.

[ABR-113392] A Linux machine shows a kernel panic at the startup after an agent installation.

Issues fixed in build 50064

[ABR-118454] A backup or replication to Acronis Backup Storage Node fails after several retries caused by network disconnects. The following error appears: "Operation Not Supported".

[ABR-116419] Overwriting a tape during a full backup fails if the Overwrite a tape in the drive when creating a full backup option is enabled. The following error appears: "Failed to overwrite the data on the tape".

Issues fixed in build 50054

Installation

Local management

[ABR-109360] Automatic reattempts in case of a network disconnection do not work during a backup to an SFTP server.

[ABR-109183] Validation of an archive that is split between multiple CD/DVD fails.

[ABR-107904] Recovery of a 2 TB+ dynamic LDM/LVM volume to an empty non-initialized disk may result in initializing the target disk as MBR instead of GPT and in reducing the recovered volume size to 2 TB.

[ABR-107732] WinPE 5.0-based bootable media fails to access a network share. The following error appears: "Access to the file is denied."

[ABR-107651] Recovery of the entire machine or individual volumes fails if the following conditions are met simultaneously: a reboot is required, the backup is located on a USB flash drive, and the Fixed drive mode was selected during the backup plan creation. The following error appears: "Cannot recover from the specified backup archive. The archive resides in a location that becomes inaccessible after reboot that is required for recovery."

[ABR-106079] Under bootable media, a recovery from an archive received from Acronis Cloud via the Large Scale Recovery service may fail.

[ABR-104436] When initiated from Disk Management, formatting a volume hangs if both Acronis SnapAPI (snapman.sys) and Kaspersky (klif.sys) drivers are installed on the machine.

[ABR-106836] Backing up a file with Alternate Data Streams (ADS) that is located on a network share requires user interaction. The following message appears: "The process cannot access file because it is being used by another process."

[ABR-104349] A backup stored on multiple DVDs cannot be detected during the recovery task configuration.

[ABR-103227] Recovering all contents from a file-level backup of an entire volume (for example, C:\ ) does not recover any data.

[ABR-102788] Browsing a vault takes too long if the vault is located on a network share accessible via both NFS and SMB.

[ABR-102152] During a disk-level backup of a volume that contains a huge amount of files (around 100 million), processing the source files exclusion takes too long. The issue occurs even if no exclusions are specified by the user, i.e. when only the default exclusions are applied. As a result, the backup task hangs at 20%.

[ABR-60281] During a file-level backup via the command-line interface, the information about folders specified for backup and missing at the time of the backup is not logged. As a result, it is not possible to find out from the log whether a certain folder was backed up or not, only browsing the archive helps.

Centralized management

[ABR-110632] Results in the Tasks' runs report are shifted by 1 day, except for the current day statistics that are correct.

[ABR-110002] During a consolidation or a replication in a deduplicating vault, service_process.exe on Acronis Backup Storage Node consumes too much RAM.

[ABR-104614] When replicating backups between vaults managed by different storage nodes, the replication activity does not show the progress.

[ABR-104102] When backing up a huge (>2 TB) virtual machine to a deduplicating vault, service_process.exe on Virtual Appliance may crash.

[ABR-102653] If a centralized backup plan is applied to two or more machines, subactivities are duplicated as separate activities in the plan details.

[ABR-98809] When multiple backup deletion or consolidation activities are executed simultaneously, the storage node service is deadlocked.

[ABR-98793] A validation of an encrypted deduplicating vault fails if the vault contents were exported from another encrypted deduplicating vault created by Acronis Backup 11.5.

[ABR-96509] After a network share was accessed by using net use from the machine with Acronis Backup Storage Node, creating a managed vault on the network share fails. The following error appears: "Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed…"

[ABR-96090] In some cases, Acronis Backup Management Server crashes.

[ABR-89456] Simultaneous backups of several virtual machines to a managed vault hang.

[ABR-89440] If the backup consolidation is disabled in the retention rules of a backup plan, Acronis Backup Storage Node nevertheless consolidates backups instead of marking them for deletion.

[ABR-70274] Validation of archives stored in an encrypted deduplicating vault is too slow.

Applications support

[ABR-105005] Recovering a folder with emails from a database-level Exchange backup fails after the following sequence of actions: creating a backup, deleting the folder, creating another backup, trying to recover the folder from the first backup.

[ABR-101531] Recovering application (for example, SQL Server) data from a tape device takes much longer than recovering files of the same total size.

[ABR-102473] When using Acronis SharePoint Explorer to extract a big file (>1 GB) from a single-pass backup, the operation fails.

[ABR-87348] Acronis backup files (.tib) become locked after using Acronis SharePoint Explorer to recover some data from them.

[ABR-102619] A backup to tapes hangs and fails on certain tape devices.

[ABR-102333] A tape is not ejected during a full inventory operation. The following SCSI error appears: "UNLOAD TAPE FAILURE."

[ABR-102191] All backup plans that save backups to a tape-based managed vault fail if there is one corrupted archive in the vault.

[ABR-101750] If an archive name contains non-English letters, replicating the archive to a tape-based managed vault fails.

[ABR-101431] The information about bytes saved and bytes processed is not saved when backing up to a tape-based managed vault.

[ABR-101315] After updating Acronis Backup from version 11.5 Update 3 or earlier, tape-based managed vaults become unreadable. As a result, a rescanning operation is required to rebuild the tape database.

[ABR-86110] Under bootable media, non-empty write-protected tapes are not properly inventoried and rescanned.

Virtualization

[ABR-101003] Backups of Hyper-V virtual machines may fail due to excessive usage of WMI on a Hyper-V host.

[ABR-100427] Acronis Backup does not detect that an agent is running inside a KVM virtual machine if KVM is running on Red Hat Enterprise Linux 7. As a result, a single Acronis Backup Advanced Universal license or Acronis Backup Advanced for RHEV license cannot be used to back up an unlimited number of virtual machines running on KVM.

[ABR-92178] Acronis Backup does not detect that an agent is running inside a XEN virtual machine if it has the Viridian option enabled. As a result, a single Acronis Backup Advanced Universal license or Acronis Backup Advanced for Citrix XenServer license cannot be used to back up an unlimited number of virtual machines running on XEN.

[ABR-85612] An LVM volume that occupies an entire disk of a virtual machine is not shown in the acrocmd list content command output if the backup of this machine was created by Agent for VMware or Agent for Hyper-V.

[ABR-85413] VMware vCenter integration enabled on Acronis Backup Management Server may incorrectly reflect the changes in the vSphere infrastructure if some of the virtual machines have vSphere annotations specified in the following format: <value 1><space character>=<space character><value 2>.

Known issues

This section describes issues that are currently known and provides solutions to avoid the issues where possible.

Installation

[ABR-102251] Components for Remote installation are not installed if the Acronis Backup setup program is started from a network share.

Solution: Uninstall Components for Remote installation via Control Panel > Programs and Features; copy the setup program to a local folder; repeat the installation of Components for Remote installation.

[ABR-33952] Cannot remotely upgrade Acronis Backup & Recovery 11 Agent for Linux if the upgrade license is added to the license server but the full Acronis Backup & Recovery 11 license is not.

When installing Acronis Backup Management Server to Windows 10, where no Microsoft SQL Server instance is pre-installed, Acronis Backup setup would deploy Microsoft SQL Server 2008 Express. Although Microsoft SQL Server 2008 Express is not officially supported on Windows 10 by Microsoft, such setup was verified and no known issues were found. Workaround: before running Acronis Backup setup, install Microsoft SQL Server 2014 Express or any other edition on the target machine // use pre-installed Microsoft SQL Server 2014 on the target machine or on another machine on the network.

Local management

There is no agentless single-pass disk and application backup of virtual machines (the Microsoft SQL metadata is not cataloged).

Solution: Such VMs should be backed up as physical ones. To do so, the required agents need to be installed into the guest OS.

[ABR-68306] Linux-based bootable media does not detect OCZ RevoDrive 350. Open source Linux drivers for this device are not available.

Solution: Use WinPE-based bootable media.

[ABR-66910] It is not possible to choose a LiveDrive FTP server as a backup location.

Root cause: A LiveDrive FTP server does not comply with the FTP standard concerning the "LIST" command when the command is applied to a specific file. The command execution hangs while waiting for a response from a server.

[ABR-32785] Acronis Backup Management Console displays a disk number instead of a storage space name in the Archive view tab, the Backup Content window, and the Disk management view.

[ABR-31544] No warnings in the log after recovery of files to a ReFS volume if the files have a compressed attribute. Such files are not supported.

[ABR-31547] Recovery of files to a ReFS volume fails if the files have an encrypted attribute.

[ABR-32851] It is impossible to browse and back up volumes on dynamic disks that have a sector size of 4 KB (known as dynamic Advanced Format disks).

[ABR-31348] In Windows 8/Windows Server 2012: Disks that are made members of a storage pool disappear from Acronis Backup Management Console only after restarting Agent for Windows to which Acronis Backup Management Console is connected.

[ABR-32573] The "E00060106: Failed to save data of backup being edited" error appears when mounting a ReFS volume from a disk backup in the Read only access mode.

Solution: Click Ignore.

[ABR-31884] The Backup and Recover items are not disabled in the Windows context menu if only Acronis Backup Agent for Exchange is installed on the machine. The Recover item is also not disabled in the Windows context menu if an Exchange backup is selected in the system.

[ABR-30600] The Wake-on-LAN functionality does not work in Windows 8/Windows Server 2012.

[ABR-35418] A backup of a large amount of data under Linux-based bootable media with the Linux-style volume representation fails if the destination folder name contains a space character.

[ABR-70817] If an entire machine is recovered with reboot and the recovery is initiated from some Linux distributions (for example, Ubuntu 15.10, Red Hat Enterprise Linux 7.2, and Debian 8.1), the operating system is unbootable.

Solution: Recover by using bootable media.

Centralized management

[ABR-27698] The When there is insufficient space while backing up setting for the Clean up archive parameter within the Custom backup scheme does not work if an archive is stored in a managed vault.

[ABR-29591] Storage node settings changed in the Windows registry are not applied until the storage node service restart.

Virtualization

[ABR-112520] In Red Hat Enterprise Virtualization 3.6, it is not possible to add machines for remote installation via From RHEV environment when the username is specified in a non-domain format. The following error appears: "Failed to enumerate datacenters."

Solution: Specify credentials in the following format: "admin@internal".

[ABR-77204] After a Hyper-V virtual machine with a fixed MAC address is recovered to ESX(i), the resulting machine cannot be powered on.

Solution: Adjust the MAC address of the recovered machine manually.

[ABRXII-3548] Acronis Backup Command-Line Tool fails to back up individual disks or volumes of a virtual machine by using Acronis Management Server Service (--service=ams).

Solution: Back up the entire virtual machine instead (do not specify the --disk or --volume parameters).

[ABR-38392] Letters of dynamic volumes of virtual machines are shown incorrectly in the Data to Back Up window.

[ABR-38395] Letters of volumes A and B of virtual machines are shown incorrectly in the Data to Back Up window.